A friend gave me several (10+) bottles of STP Diesel Fuel Sulfur subsitute that he was given after his friend's 300D died due to being driven without coolant.

My research indicates that a sulfur substitute additive is not necessary in OM603 engines as I own a 1987 MBZ 300TDT with an OM603.

I just wanted to see if anyone else has any thoughts on this before I get rid of the stuff.

Thanks in advance.

-Steve

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1987 300TDT smoke silver w/ burgundy leather interior
2000 VW Passat wagon indigo blue w/ beige leather interior
1985 Mustang SVO
1970 Chevrolet K10 fleetside, shortbed